$(function () {
  try{
    if (/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)) {
    }else{
      $(function(){
        var canvas = document.querySelector('canvas');
        ctx = canvas.getContext('2d')
        canvas.width = $(window).width();
        canvas.height = $(window).height();
        ctx.lineWidth = .3;
        ctx.strokeStyle = (new Color(150)).style;

        var mousePosition = {
          x: 30 * canvas.width / 100,
          y: 30 * canvas.height / 100
        };

        var dots = {
          nb: 250,
          distance: 100,
          d_radius: 150,
          array: []
        };

        function colorValue(min) {
          return Math.floor(Math.random() * 255 + min);
        }

        function createColorStyle(r,g,b) {
          return 'rgba(' + r + ',' + g + ',' + b + ', 0.8)';
        }

        function mixComponents(comp1, weight1, comp2, weight2) {
          return (comp1 * weight1 + comp2 * weight2) / (weight1 + weight2);
        }

        function averageColorStyles(dot1, dot2) {
          var color1 = dot1.color,
            color2 = dot2.color;

          var r = mixComponents(color1.r, dot1.radius, color2.r, dot2.radius),
            g = mixComponents(color1.g, dot1.radius, color2.g, dot2.radius),
            b = mixComponents(color1.b, dot1.radius, color2.b, dot2.radius);
          return createColorStyle(Math.floor(r), Math.floor(g), Math.floor(b));
        }

        function Color(min) {
          min = min || 0;
          this.r = colorValue(min);
          this.g = colorValue(min);
          this.b = colorValue(min);
          this.style = createColorStyle(this.r, this.g, this.b);
        }

        function Dot(){
          this.x = Math.random() * canvas.width;
          this.y = Math.random() * canvas.height;

          this.vx = -.5 + Math.random();
          this.vy = -.5 + Math.random();

          this.radius = Math.random() * 2;

          this.color = new Color();
        }

        Dot.prototype = {
          draw: function(){
            ctx.beginPath();
            ctx.fillStyle = this.color.style;
            ctx.arc(this.x, this.y, this.radius, 0, Math.PI, false);
            ctx.fill();
          }
        };

        function createDots(){
          for(i = 0; i < dots.nb; i++){
            dots.array.push(new Dot());
          }
        }

        function moveDots() {
          for(i = 0; i < dots.nb; i++){

            var dot = dots.array[i];

            if(dot.y < 0 || dot.y > canvas.height){
              dot.vx = dot.vx;
              dot.vy = - dot.vy;
            }
            else if(dot.x < 0 || dot.x > canvas.width){
              dot.vx = - dot.vx;
              dot.vy = dot.vy;
            }
            dot.x += dot.vx;
            dot.y += dot.vy;
          }
        }

        function connectDots() {
          let i_dot;
          let j_dot;
          for (let i = 0; i < dots.nb; i++) {
            for (let j = 0; j < dots.nb; j++) {
              i_dot = dots.array[i];
              j_dot = dots.array[j];

              if ((i_dot.x - j_dot.x) < dots.distance && (i_dot.y - j_dot.y) < dots.distance && (i_dot.x - j_dot.x) > -dots.distance && (i_dot.y - j_dot.y) > -dots.distance) {
                if ((i_dot.x - mousePosition.x) < dots.d_radius && (i_dot.y - mousePosition.y) < dots.d_radius && (i_dot.x - mousePosition.x) > -dots.d_radius && (i_dot.y - mousePosition.y) > -dots.d_radius) {
                  ctx.beginPath();
                  ctx.strokeStyle = averageColorStyles(i_dot, j_dot);
                  ctx.moveTo(i_dot.x, i_dot.y);
                  ctx.lineTo(j_dot.x, j_dot.y);
                  ctx.stroke();
                  ctx.closePath();
                }
              }
            }
          }
        }

        function drawDots() {
          for(let i = 0; i < dots.nb; i++){
            var dot = dots.array[i];
            dot.draw();
          }
        }

        function animateDots() {
          ctx.clearRect(0, 0, canvas.width, canvas.height);
          moveDots();
          connectDots();
          drawDots();

          requestAnimationFrame(animateDots);
        }

        $('canvas').on('mousemove', function(e){
          mousePosition.x = e.pageX;
          mousePosition.y = e.pageY;
        });

        $('canvas').on('mouseleave', function(e){
          mousePosition.x = canvas.width / 2;
          mousePosition.y = canvas.height / 2;
        });

        createDots();
        requestAnimationFrame(animateDots);
      });
    }
  }catch(e){}
})
